The project: MoDOT selected the Gonzalez/IMEG/GBA team to develop traffic control, construction sequencing, and guardrail upgrade plans for the rehabilitation of 33 bridges in St. Louis City and surrounding counties.

The goal: Extend the lifespan of these bridges by bundling work into two projects: J6I3540, which includes crack seal bridges, and J6I3550, which involves epoxy overlays.

Project approach: Coordination with Area Teams, railroads, and utilities was crucial to ensuring a smooth process. To streamline the design process, the project was divided into three groups, with each consultant responsible for 11 sites. Minimal topographic surveying was performed, relying instead on aerial imagery. MoDOT handled the bridge design in-house, providing memos and checklists, while the consultant team managed all roadway elements, including plan development, permitting, maintenance of traffic, standard details, and specifications.

Challenge: Two channel maintenance improvements. Solution: IMEG restored them to their original design and implemented armoring and plantings to prevent further erosion. Additionally, IMEG designed more than 12,000 linear feet of guardrail with numerous end terminals, improving roadway safety. The firm also developed maintenance of traffic and traffic control plans, which included two road closures with designated detour routes. Another key aspect of the project was designing the lighting under the MO364/MO141 interchange.

The outcome: Through collaboration and strategic planning, this project successfully integrated bridge rehabilitation with roadway improvements, ensuring durability and long-term safety.